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For those late nights out, it is nice to be able to reliably test yourself before the police do it for you. This low priced BAC Tester will accurately display your BAC and g/l along with telling you the time on its dual LCD Displays. To test, you simply need to blow for 5 seconds and you will get the results, and as a added bonus there are audio and visual warnings for Caution and Danger levels of BAC. Finally, you have a real time 12 or 24 hour Clock and a Countdown timer added in.